Yamaha MX800V - Troubleshooting; Engine Does Not Start

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TROUBLESHOOTING
6-1
TROUBLESHOOTING
ENGINE DOES NOT START
IGNITION SYSTEM
The ignition system fails to operate (no spark or intermittent spark).
No. Checking steps Possible remedy
1 Check the battery.
• Clean the battery terminals.
• Recharge or replace the battery.
2
Check the spark plugs.
(Refer to “SPARK PLUGS” on page 2-2)
Re-gap or replace the spark plugs.
3
Check the ignition spark gap.
(Refer to “CHECKING THE IGNITION SPARK GAP” on
page 5-6)
If the ignition spark gap is OK, the igni-
tion system is OK.
4
Check the spark plug cap resistance.
(Refer to “CHECKING THE SPARK PLUG CAPS” on page
5-7)
Replace the spark plug cap.
5
Check the TCI units.
(Refer to “CHECKING THE TCI UNIT RESISTANCE” on
page 5-5)
Replace the TCI units.
6 Check the main switch. Replace the main switch.
7
Check the entire ignition system’s wiring.
(Refer to “CIRCUIT DIAGRAM” on page 5-1)
Properly connect or repair the ignition
system’s wiring.